Hello, and welcome to the exciting world of undercover operations! Double Agent is a 2007 game, released for the 360/PS3/PC/XBOX/Gamecube/PS2 platforms, and I'm sure I missed one or two other systems. However, the 360/PS3/PC version is substantially different both in story and execution from the more low-tech ones, interestingly enough. We will be playing the PC version.
Double Agent got somewhat battered by the critics when it came. The game got flak for being buggy (PC version, I'm looking at you), and for robbing Sam Fisher of much of the character that was built up in the three previous games. While I agree in part, I have always felt that Double Agent often gets an unnecessarily harsh treatment. There are some brilliant parts to the game, and the story (though perhaps darker than previous games) is solid. I hope more people will come to realize that this is quite a good game, even as it stands in the shadows of its predecessors.